A comparison of cortical bone atrophy secondary to fixation with plates with large differences in bending stiffness.
A comparison of cortical bone atrophy secondary to fixation with plates with large differences in bending stiffness.
复制标题
弯曲刚度差异较大的钢板固定继发的皮质骨萎缩的比较。
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
D. Amiel
中科院分区：
文献类型：
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作者：
S. Woo;W. Akeson;R. Coutts;L. Rutherford;D. Doty;G. Jemmott;D. Amiel
将两种弯曲刚度差异较大的内固定钢板应用于6只成年杂种犬的成对完整股骨，研究刚性固定引起的骨质疏松症。钢板应用9个月和12个月后，在刚性钢板侧可见明显增加的骨萎缩量。对两股骨干不同节段标本的生物力学测量显示，骨骼具有相似的力学特性（作为组织），但具有不同的结构特性（作为器官）。这些发现表明，由于钢板固定导致的骨质疏松症是通过皮质变薄而不是通过骨组织力学性能的降低而发生的。
Two internal-fixation plates with large differences in bending stiffness were applied to pairs of intact femora of six adult mongrel dogs to study the osteoporosis induced by rigid fixation. After nine and twelve months of plate application a significant, increased amount of bone atrophy was seen on the rigidly plated side. Biomechanical measurements of specimens from various segments of both femoral diaphyses showed the bones to have similar mechanical properties (as tissue), but different structural properties (as organ). These findings suggest that the osteoporosis due to rigid plate fixation occurs by thinning of the cortex rather than by reduction of the mechanical properties of the osseous tissue.